Assert.assertEquals(merged.getRowCount(), 3);
merged.mergeShallow(m4);
Assert.assertEquals(merged.getRowCount(), 3);
merged.mergeShallow(m5);
Assert.assertEquals(merged.getRowCount(), 3);
merged.execute();
Rows<String, String> result = keyspace.prepareQuery(CF_STANDARD1).getRowSlice("1", "2", "3").execute().getResult();